- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358765 > LC78622NE (Sanyo Electric Co.,Ltd.) Compact Disc Player DSP(用于CD播放器的8位DSP) PDF資料下載
參數(shù)資料
| 型號： | LC78622NE |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| 中文描述： | 光碟機的DSP（用于光盤播放器的8位數(shù)字信號處理器） |
| 文件頁數(shù)： | 20/31頁 |
| 文件大小： | 338K |
| 代理商： | LC78622NE |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
No. 6015-20/31
LC78622NE
Audio output level = 20 log
[dB]
For example, the formula below calculates the time required for the attenuation level to increase from 00H to EEH
when a 4STEP UP command is executed. Note that the control microprocessor must provide enough of a time
margin for this operation to complete before issuing the next attenuation level set command.
≈
21.6 ms
Note: Setting the attenuation level to values of EFH or higher is disallowed to prevent overflows in one-bit D/A
converter calculations from causing noise.
14. Mute Output; Pin 35: MUTEL/CONT7, pin 42: MUTER/CONT8
15. C2 Flag Output; Pin 30: C2F
C2F output flag information in 8-bit units.
16. Digital Output Circuit; Pin 31: DOUT
This is an output pin for use with a digital audio interface. Data is output in the EIAJ format. This signal has been
processed by the interpolation and muting circuits. This pin has a built-in driver circuit and can directly drive a
transformer.
The DOUT pin can be locked at the low level by issuing a DOUT OFF command.
The UBIT information in the DOUT data can be locked at zero by issuing a UBIT OFF command.
The DOUT data can be switched to data for which interpolation and muting processing have not been performed
by issuing a CD-ROM XA command.
When searching and when returning the pickup to its initial position, there are cases when the frequency output
data will contain a parity error and locking is lost temporarily. To prevent this, we recommend directly executing a
UBIT OFF ($41) command and then directly executing a UBIT ON ($40) command when searching and when
returning the pickup to its initial position.
17. Mute Control Circuit
Inputting the above command mutes the audio level (MUTE -
∞
dB). Since zero-cross muting is used, there is very
little noise associated with this operation. The IC defines zero cross to be the ranges where the upper 7 bits of the
data are all zeros or all ones. Note that the MUTE -12 dB instruction supported by the LC78620E has been removed
from this product.
238 level
×
4STEP UP
44.1 kHz
ATT DATA
100H
MSB
LSB
Command
RES = low
G
G
0 1 0 0 0 0 1 0
DOUT ON
0 1 0 0 0 0 1 1
DOUT OFF
0 1 0 0 0 0 0 0
UBIT ON
G
G
0 1 0 0 0 0 0 1
UBIT OFF
1 0 0 0 1 0 0 0
CDROM-XA
1 0 0 0 1 0 1 1
ROMXA-RST
G
G
MSB
LSB
Command
RES = low
0 0 0 0 0 0 0 1
MUTE: 0 dB
MUTE: –
∞
dB
0 0 0 0 0 0 1 1
G
G
相關PDF資料 |
PDF描述 |
|---|---|
| LC78624E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78625E | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
| LC78625 | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
| LC78626KE | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78626 | 16-bit fixed point DSP with Flash |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LC78624E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78625 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78625E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78626 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players |
| LC78626E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players |
發(fā)布緊急采購，3分鐘左右您將得到回復。